every tile that has been written, heaviest first. a tile is 1,000,000 tokens of supply and 128 cells of the field. it belongs to whoever bought it last and it remembers everyone who sold it.
one tile, 16 by 8┌────────────────┐│0123456789abcdef│ row 0│................│ row 1│................│ row 2│................│ row 3│................│ row 4│................│ row 5│................│ row 6│................│ row 7└────────────────┘a signature is 64 bytes.64 bytes are 128 halves.a tile has 128 cells.the first buy of a tilewrites one half per cell,left to right, top down.weights, light to heavy:.':;~=+*xo%#&$@
cells are numbered 0 to 127, left to right, top to bottom. a signature's first byte fills cells 0 and 1, its last byte fills cells 126 and 127. the high half of each byte goes first. a half is a number from 0 to 15, and that number is the cell's weight. a blank tile takes the signature as it is. a returned tile takes it as an exclusive or over what was left, so the old picture shows through the new one.
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